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Sant Atulanand Convent School, , Time:, , Half Yearly Examination: 2021-202, Class – VII, Science, (SET-2), MM: 40marks, , Instructions: All questions are compulsory., , Q1. Define the following:, , (2 x 4 = 8), , (i) Atmospheric pressure, , (iii) Indicators, , (ii) Humidity, , (iv) Chemical change, , Q2.Difference between the following:, , (3 x 3 = 9), , (i) Aerobic and Anaerobic respiration, (ii) Weather and climate, (iii) Conduction and convection, , Q3. Answer the following:, , (3 x 3 = 9), , (i) What is Insulator? Give two examples?, (ii) Why it is difficult to ride a bicycle while moving against the wind?, (iii) Give three ways to prevent soil pollution., Q4. Convert 122 0 F into degree Celsius., , Q5. Draw a well-labelled diagram of following (i) Human respiratory system, (ii) Soil profile, , (4), , (5 x 2 = 10)